Permutation keyboard apparatus



Dec. 16, 1941. E. A. GUBls'cH 2,266,027

PERMUTATION KEYBOARD APPARATUS y Filed Feb. 5, 1940 I l 6 Sheets-Sheet 1 INVENTOR ERWIN A. GUBISCH l Dec. 16, 1941. E A. GUBlsCH 2,266,027

PERMUTATION KEYBOARD APPARATUS 6 Sheets-Sheet 2 Filed Feb. 5, 1940 INVENTOR RWIN A. GUBISCH ATTORNEY Dec. 16, 1941.

E. A. GUBISCHl PERMUTATION KEYBOARD APPARATUS 6 Sheets-Sheet 3 Filed Feb. 5, 1940 ID N INVENTOR ERWIN A. GUBISCH AT ORNEY Dec. 16, 1941.

' E. A. GUBISCH 2,266,027

PERMUTATION KEYBOARD APPARATUS 6 Sheets-Sheet 4 Filed Feb. 5, 1940 FIG. IO

||o A.c.

ERWIN lA.GUBISCH AT oRNEw( De. 16, 1941. E. A. GUBlscH I 2,266,027

PERMUTATION KEYBOARD APPARATUS Filed Feb. 5, 1940 e sheds-sheet 5 INVENTOR ERWIN A. GUBISCH I ATT NEY Dec. 16, E A GUBlSCH PERMUTATION KEYBOARD APPARATUS Filed Feb. 5, V1940 e sheets-sheet e AFF" |NvENToR ERwlN A. sualscH ATT RNEY Patented Dec. 16, 1941 2,266,027 PERMUTATION KEYBOARD APPARATUS Erwin A. Gubisch, Chicago, Ill., assignor to Tele- Y type Corporation, Chicago, Ill., a. corporation of Delaware Application February 5, 1940, Serial No. 317,309

11 Claims.

The present invention relates to permutation keyboard apparatus such as employed for transmitting telegraph signals or for perforating tape in accordance with a code comprising permutations of a definite number of two diierent signaling conditions.

Preparation of a perforated tape in accordance with a code such as represented by transverse rows of perforations for the-respective characters for control of printing telegraph receivers for printing a message in page form requires identiiication to the operator preparing the tape of the exact number and positions of characters in a line of printing to apprise the operator of the approach of the end of a line of printing when the carriage return line feed'key of the keyboard apparatusy should be depressed. Depression of the carriage return line feed key perforates the tape with a code signal operative on the receiving printer to return the carriage, either the type basket or platen depending upon the particular type of printer involved in the operation, to its beginning-of-line position and advance the page to present an unprinted area to the printing mechanism. Such indication is provided by an indicator operated step by step in response to depression of character keys of the keyboard apparatus and reset upon the depression of the carriage return key of the keyboard apparatus.

In keyboard apparatus adaptable to transmit telegraph signals in response to the depression of key levers and to perforate a tape selectively, operation of the perforator may be suspended pending the transmission of-a flash or urgent message through the direct operation of the key levers. Following transmission of the flash or urgent message operation of the perforator may be resumed. Under such circumstances it is desirable that the character indicator remain in its previously set position from which it starts upon resumption of operation of the perforator.

The principal object of invention of the present invention resides in the provision of a character counter for keyboard apparatus which is relatively simple and inexpensive to manufacture and which indicates the exact number of charactercounter embodies an arcuate scale marked to indicate the number of characters along which a pointer is advanced step by step to indicate to the operator the number of characters included in the line of printing. Step-by-step advancement of the pointer is accomplished through a pawl and ratchet mechanism operated for each operation of the tape perforator, provided conditions are not established which will be the case upon the depression of function key levers to preclude their operation. Under such circumstances the tape will be perforated to represent the function, such as shift and unshift functions, but the pawl and ratchet mechanism will not be operated. Upon the operation of the carriage return line fee'd key lever, the pointer will 'be restored under the action of a spring to its zero or beginning-of-line position. When the keyboard transmitter is operated independently of the tape perforator, the pawl and ratcheI mechanism will not be operated, the pointer will not be advanced along the character scale, and the pointer will not be restored to its zero position upon the actuation of the carriage return key lever.

The keyboard mechanism includes a plurality of keys operative on pairs of vertically movable permutation bars through which interference bars of a perforating mechanism are moved selectively to control the operation of punch pins allotted thereto, and correspondingly perforate a tape. The permutation bars, in addition to controlling the position of the interference bars of the perforator, also control the effectiveness of electrical contacts for determining the character of imacters in a line of printing under various condipulses transmitted to a connected line circuit representative of'characters to be recorded or reproduced on a receiving printer at the distant end of the line circuit.

A more complete understanding of the invention may be obtained from the following description taken in conjunction with the accompanyings drawings, wherein Fig. 1 is a perspective view showing the respective units embodied in the invention; 1

Fig. 2 is a plan View of the keyboard perforator transmitter mechanism of the present invention;

Fig. 3 is a front elevational view with certain parts in section in order to more clearly illustrate the invention;

Fig. 4 is an elevational view taken substantially on the line 4-4 of Fig. 2;

Fig. 5 is an elevational View taken substantially on the line 5-5 of Fig. 2;

shown a casting indicated generally by the nua meral |2 Mounted on this casting l2 is a receiving printer indicated generally by the numeral I3, Fig. 3, a keyboard I4, a direct keyboard controlled transmitter I5, a perforator I6, a tape transmitter l1, and a character counter I3.

The keyboard |4 includes a plurality of key levers 26 pivotally nounted on a, pivot rod I9 (Fig. 7) which extends transversely of and is mounted in the base casting l2. The key levers 20 are normally raised by individual springs (not shown) and are provided at their forward ends with key tops 2|.

Beneath the key levers 20 and extending transversely thereof are a plurality of pairs of permutation bars 22. The present invention has been applied to structure for operation on the basis of a ve-unit code. Consequently, there are a corresponding number of pairs of permutation bars 22. Each pair of permutation bars 22 comprises a bar 23 and a bar 24. These bars are all provided at each end with vertical slots or notches which nt over guide combs 25 and 26 having shafts 21 and 28. The bars 23 and 24 are thus held against longitudinal movement but are free to be shifted vertically.

Pivotally mounted on shafts 2l and 28 are pairs of rock arms 29 and 30 interposed between each pair of code bars 22. The rock arms 29 and 36 are substantially T-shapecl with their free ends formed with offset lugs on opposite sides of the pivot shafts 29 and 30 and spaced some distance therefrom. One of the lugs of each rock arm projects forwardly into a notch on the lower edge of the corresponding permutation bar and its other lug projects rearwardly beneath the lower edge ,of the corresponding permutation bar. With this arrangement, the depression of either bar of the pair of `bars 22 rocks the rocker arm and lifts the associated permutation bar. Connected to each pair of rock arms 29 and 36 is a longitudinally movable permutation bar 3l. When the pairs of permutation bars 23 and 24 ,are moved in accordance with the depression of the key levers 20, the permutation bar 3l will be moved longitudinally in a direction corresponding to the setting of the permutation bars 23 and 24.

Intermediate the ends of the permutation bars 3| and thus between the rocker arms 29 and 36 are pins 32 and 33. Between the pins 32 and 33 of each of the permutation bars 3| is the lower end of a selecting finger 34 which extends upwardly through an opening in the base l2 and are mounted on a common pivot shaft 35 secured to brackets mounted on the base i2. The ngers 34 control a set of switch members 36 which are also mounted on a common pivot shaft 3l suitably secured to upright members and 52, Fig. 2. At the upper end of each of the selecting ngers 34 a projecting portion 3S is formed which, in accordance with the movement of the permutation bar 3| individual thereto will be moved into and out of operative relationship with the horizontal arm of the switch controlling. members 36 which are in the form of bell crank levers, as clearly shown in Fig. 3. The fingers 34 and the bell crank levers 36 are held in proper spaced position on their respective pivot shafts 35 and 31 by washers or spacers.

Each of the bell crank levers 36 has a hook 4l which cooperates with a contact spring 4| and normally holds the contact spring 4| out of electrical contact with its associated contact spring 42. The contact spring 4| is of such a character that it normally tends to engage its contact spring 42 but is held out of engagement therewith due to the fact that its bell crank lever has a projection 43 which cooperates with a cam drum 45. Cam drum 45 is mounted on a horizontal shaft 46 extending transversely of bell crank levers 36 and has cut in its periphery six notches or slots arranged in a helical series so that as f the cam drum 45 rotates, the slots will successively cooperate with projections 43 and, provided the bell crank lever 36 is at that moment free to move, will allow its movement .and will permit the closure of contacts 4| and 42v through the medium of which impulses are transmitted to a connected line circuit, as will be subsequently described. In the normal rest position of cam drum 45, one of the slots is positioned with respect to projection 43 on its bell crank lever 36 to allow the contacts 4| and 42 associated therewith to be engaged. This results in normally having the line circuit closed through these contacts, which establishes a condition in the receiving printer to arrest its rotary elements and condition it for subsequent operation.

Shaft 46 on which the cam drum 45 is loosely mounted is journaled in brackets 50 and 5I, Fig. 2, and has secured toit a gear 53 which is meshed with a gear 54 mounted on a pilot shaft 55 which is journaled in two bearing brackets, one of which is indicated by the numeral 56. Power for driving pilot shaft 55 is communicated from a motor 5l through a pinion gear 58 mounted on its shaft which meshes with a gear 59 also mounted on pilot shaft 55. Shaft 46 and pilot shaft 55 rotate continuously with the operation of motor 5l.

Cam drum 49 has secured to it a collar 66, a portion of which is serrated as shown in Fig. 7 .and is normally urged along shaft 46 by a spring 6i. Secured to shaft 46 and arranged to cooperate with collar 60 is a similarly machined collar 62. As previously described, shaft 46 rotates continuously. However, due to the arrangement of collars 60 and 62, which constitute a clutch between shaft 46 and cam drum 45, the latter may be selectively rotated.

Spring 6| tends to move collar 60 along shaft 46 and into engagement with collar 62, but this action of spring 6| is normally prevented by means of a pivoted arm 63 which is latched into the path of a shoulder 64 formed on collar 66, Fig. 7, and which is spring-urged out of the path of shoulder 64. Shoulder 64 is also formed with a gradual camming surface so lthat as the collar 66 rotates it will cooperate with the associated portion of the stop arm 63 and cause collar 66 to be moved along the shaft 46 against the action of spring 6| to dlsengage the serrated portions of collars 66 and 62 and stop collar 66 with its associated cam drum 45.

Arm 63 is pivotally mounted on a, shaft 65 4,.by a spring .66, Fig. 7, which has one end seprevented from doing so` due to the engagement of an extension 61, Figs. 2 and '7,v of arm 63 either with shoulder 68 or shoulder 10 of vertically extending levers 69 and 1|, respectively.

Levers 69 and 1| are,pivotally mounted on a shaft 15 mounted in asubstantially U-shaped bracket 16 secured on thevupper surface of base I2. Levers 69 and 1| are normally urged toward each other bya spring 11 which has its ends secured to the free ends of levers 69 and 1|, Movement of the levers 69 and 1| toward each oth'er is limited by an arm 18 formed near the upper end of lever 1|.

Lever 69 is further urged about its pivot in a clockwise direction, as viewed in Fig. 7, by a spring 19 which has one end secured to a spring post formed in lever 69 and aspring post 83 secured to an ear formed on bracket 16 which supports pivot shaft 15. Integral with arm 69 is an arm 84 and integral with arm 1| is an arm 85, Fig. 2. Operation of arms 69 and 1| to move shoulders 68 and 10 free of extension 61 of arm 63 to permit spring 66 to move arm 63 free of shoulder 64 on collar 69 is accomplished through the rotation of arms 84 and 85, respectively, in accordance with functions of the keyboard mechanism to be described later.

Pivotally mounted on shoulder screws secured to base I2 is an arcuately shaped plate 89, Fig. 8, which has a vertically extending ear 90, Fig. 2, which supports a pivot rod 9|. Pivotally mounted on rod 9| are levers 92 and 93 arranged with springs 94 and 95, respectively, as shown in Fig. l. These springs serve to maintain the levers 92 and 93in their proper operative position. One arm of lever 92 extends beneath arm 85 of arm 10, whereas an arm of lever 93 is positioned above arm 84 of arm 69.

As shown in Fig. l, lever 92 has an extension 98 engagea-ble by the free end of an arm 99 secured to and operated by bail which has arms secured to a space bar |0|. Consequently, when the space bar |0| is depressed, arm 99 will be moved downwardly and through extension 98 lever 92 will be rotated counterclockwise, as viewed in Fig. 7, against its spring 94 to rotate arm 85 upwardly about its pivot shaft 15 andV thus rotate arm 1| clockwise to move its shoulder 19 free of extension 61 of arm 63. Because spring 11 has one end secured to arm 69 and its other end secured to arm 1|, arm 1| will, upon the counterclockwise rotation of arm 69, tend to follow its movement. Projection 18 integral with arm 1| determines a fixed minimum space between arms 69 and 1|.

As shown in Fig. 7, lever 93 has an arm |02 which projects downwardly through an opening in base |2 and wh'ich has its free end aligned with the upper edge of a universal bail |03 pivotally mounted onpivot studs such as |04, shown in Fig. 1. In accordance with usual practice in telegraph keyboards, universal bail |03 responds to the depression of each of the'key levers 20 and the space bar |0|. Upon its operation, arm |02 will be engaged to rotate lever 93 in a clockwise direction, as viewed in Fig. 7, to depress arm 84 of arm 69 to move thereby shoulder v68 of arm 69 free of extension 61 of arm 63 and thus permit spring 66 to rotate arm 63 about pivot supported by bracket s2 and is urged m a clockwise-directionaboutv its pivot, as viewed ixiFlg.

- cured to arm 63 and the other en d secured to a ,shoulder of arm 1|.

' Rotation of cam drum 45 isthus-ellected due rotating collar 62.

to the engagementv of collar 60 with continuously Due to the connection between arms 69 and 1| th'rough spring 11, arm 1| will follow the counterclockwise rotation of arm 69 and thus its shoulder 10 will tend to assume a position in the path f extension 61 under the influence of spring 11 and will be engaged by extension 61v should' a key lever vor the space bar be held depressed for a period longer than that required for cam drum 45 to complete one cycle" of rotation, for under such circumstances shoulder 68 of arm 69 will be h'eld out of the path of extension 61 of arm 63. When th'e key lever `or the space bar is released, arm

69,-by the action of its spring 19, rotates about its pivot 15 to the'position shown in Fig. 7, and arm 1|, through projection 18 engaging arm 69, will assume its normal position whereupon extension 61 will move free of shoulder 10 and will engage shoulder 68 of arm 69.

When it is desiredv to rotate cam drum 45 through a plurality of cycles, space bar |0| yis held depressed, and sincev its depression through arm 99 rotates lever 92 to in turn rotate arms and 1| and through universal bail |03 rotates lever 93 in turn to rotate arms 84 and 69,.shoul ders 68 and 10 of arms 69 and 1|, respectively, will be moved free and out of the path of extension 61 of arm 63. Consequently, as long as shoulders 68 and 10 remain out of the path of extension 61, co1lar60 continues its engagement with continuously rotating collar 62 to cause the corresponding rotation'of cam drum 45. Upon the release of the space bar |0|, arms 69and 10 return to the position shown in Fig. 7 and extension 61 engages shoulder 68 of arm 69, whereupon arm 63, due to its engagement with the cam portion of shoulder 64 on collar 60, will cause collar 60 to be moved along shaft 46 to the left, as viewed in Fig. '1, to effect its disengagement with continuously rotating collar 62.

Each of the selecting ngers 34 is provided'at its upper end with upwardly projecting portions |08, Fig. 3, having beveled upper edges which cooperate with a beveled edge rib on a locking bail |09, pivotally mounted on shoulder screws secured to brackets 5| and 52, Figs. 2 and 7. A spring |0 which has one vend secured to lock bail 09 and the other end secured to a spring post fastened in base |2 tends tovdepress lock bail |09 and hold a roller fastened to an arm ||2 integral with the lock bail |09 lin Contact with a high portion of a cam ||3 on cam drum 45 when the caml drum vis in its normal arrested position. Shortly afterthe cam drum 45 is released for rotation and the high portion of cam ||3 has been moved from under roller on arm |12, lock bail |09 under the action of 'spring ||0 is moved about its pivot to bring the beveled rib into cooperation with the beveled portions of projections |08 and consequently lock the selecting fingers 34 in the position in which they were set through the operation of permutation bars ponents |24 is ing fingers 34.

of 'rotation of cam drum f The perforator comprises a set of punch pins llt, Fig. 3, movable through openings in upper and lower guide platesl |9 and |20 and cooperating with a die plate |2| toperforate a tape |22. The plates ||9 and |2| are spaced apart to form a tape guide. The punches ||6 are selectively operated by an actuating member or hammer |23 and 'a set of interponents |24 corresponding in number to punches ||8 and permutation bars 3|. operatively associated with each of the intera pivoted member |25 which hasits lower end connected to its permutation bar 3|. Thus, upon the permuted setting of the pery mutation bars 3| the interponents |24 will be set correspondingly through the movement of pivoted members |25. Interponents |24 thus' will be positioned either in alignment with or out of alignment with the punches ||8 to perforate correspondingly tape-|22 upon the actuation of hammer |23.

Also associated with code punches ||8 is a feed hole punch, not shown, which is operated invariably for each operation of hammer |23 to perforate the feed holes which are engaged by the pins of a pin wheel |26, Fig. 3, operated step by step for each operation of hammer |23 to present an unperforated area in alignment with the code punches ||8.

Hammer |23 oscillates on pivot screws |21 secured to brackets |28 and |29, Fig. 2, and supports at its forward edge, as viewed in Fig. 6, the free end of each of the interponents |24.

Oscillation of punch hammer |23 about its pivot is through arm |30 secured to one end ofv a lever |3| pivoted on a rod |32 secured in a projection |33 formed in the side wall of bracket |29, as shown in Fig. 2. To the free end of lever |3| a cam follower roller |34 is secured. Connection between hammer |23 and arm |30 is by means of a reduced portion of arm |30 projecting through an opening in the horizontal wall of hammer |23. Upon each oscillation of lever |3|, arm |30 and the hammer |23 will be reciprocated under the tension of a spring i35, Fig. 3, which has one end secured to hammer |23 and the other end secured to a spring post mounted in bracket |29.

As shown in Figs. 2 and 6, cam roller |34 env gages the periphery of cam |36 formed on a sleeve |31 to whichpower is communicated frommotor pinion 58 and shaft 55 through a combination friction and toothed clutch |38 which includes a driving and a driven portion. The former portion is secured to shaft 55 whereas the latter portion is fastened to sleeve |31 and normally tends to engage the driving portion by the action of a spring |39, but is unable to do so when stop projection |40 formed on lever |4| pivoted at |42 lies in the path of stop lugs |43 and |44 yformed in member |45. Member |45 tends to rotate by power communicated through the friction elements of clutch |38 but is .held against rotation due to the fact that either stop lug |43 or |44 engages Astop projection |40 on lever |4|, which is held in the path of the stop lug |43 or stop lug |44 by the action of spring |46 which has one end secured to a xedl spring post and the other end secured to a lever |4| below its asados? pivot |42. Spring |46 thus tends'to urge lever |4| in a clockwise direction about its pivot |42, as viewed in Fig. 6. Also secured to lever |4| is a cam roller |41. This roller engages cam |43 (Fig. 2) `following the movement of lever |4| in a clockwise direction, as viewed in Fig. 6 l whereupon stop projection |46 is moved free or out ot the path of stop lug |43 or |44, depending upon the rotative position of member- |46.

As cam |43 rotates,.it engages roller |41 carried by lever |4| and rotates such lever counterclockwise about its pivot |42 against the action of spring |46 while it is unlatched by a horizontal projection |49 on the lower end o! lever |4|, engaging shoulder |66 of lever |6| pivoted at |62 in a bracket |63 secured to base casting ||2. The right-hand end of lever |6|, as shown in Figs. 1 and 6, is formed with a horizontal projecting portion |64 which carries an adjustable screw |66 engageable by one end of a lever |66 pivotally mounted on a rod |61 mounted in a U-shaped member |56 cooperating with pivots |69 and |60 formed in a U-shaped member |6| secured to the underside of base |2. Lever |66 is under the tension of spring |62 and is engageable by the end of arm |63 integral with'universal bail |03, as shown in Fig. 1. Also pivotally mounted on pivot rod |51 yis an arm |65 which engages the lower surface of a horizontal projection |66 formed in member |61 which, like lever |5I, is pivoted on pivot rod |52. As shown in Fig. 6, the left-hand end of lever |61 is in the same vertical plane as the corresponding end of lever |5|, and near its end |13, which engages the underside of lever |5 has a shoulder |14 formed which is offset slightly with respect to shoulder |50 of lever |5| and engaged by projection |49 of lever |4 According to Fig. 1, each of the levers |5| and |61 has a vertically extending spring post intermediate which is a spring |15 which rotates the levers |5| and. |61 about their pivot rod to hold the left-hand ends of such levers normally in engagement. Lever |5| has an additional spring post to which is secured one end of a spring |16, the other end of which is secured to a ilxed spring post. Spring |16 serves to rotate lever |5| counterclockwise, as viewed in Fig. 6.

Uponl the operation of a key lever 20 or the space bar |0|, universal bail |03 is rotated about its pivots |04 to cause its arm |63 to engage lever |66 and rotate it against the action of its spring |62, whereupon screw |65 is engaged to rotate lever |5| to remove shoulder |50 from the path of projection |49, formed in lever |4|. By the action of spring |15, lever |61 tends to follow the movement of lever |5| to move shoulder |14 into the path of projection |49 on lever |4|. Consequently, if the depressed key lever or the space bar |0| is held depressed for a period longer than that required for shaft 55 to complete a half cycle of rotation, projection |49 will engage shoulder |14 of lever |61 and prevent the further rotation of cam |48 as well as cam |36 and thus preclude repeat operation of the perforator. Upon the restoration of the key lever or the space bar |0|, lever |5| is restored to its normal position by spring |16 and through the end |13 of lever |61 this latter lever is rotated about its pivot |52 to remove shoulder |14 from the path of projection |49 of lever |4|, which snaps into engagement with the shoulder |50 of lever |5|, in which position lever 4| remains until a succeeding key lever or space bar |0| is depressed.

The withdrawal of shoulder |50 from the path of projection |49 permits spring |46 to perform two functions; rst, the withdrawal of projection |40 from the path either of stoplug |43 or |44 and, secondly, to move roller |41 into contact with cam |48. Upon the release of cam |48 for rotation through the friction element of clutch |38, the teeth of the clutch engage and cause the rotation of cam |36, whereupon arm |3| is operated to move hammer |23 upwardly and cause the operation of the punches II8 in accordance with the position of the interponents |24 which are guided by the forward end of punch hammer |23 in accordance with the permuted settingof permutation bars 3 I, as determined bythe position of permutation bars 23 and 24 operated upon the depression of the key levers 20 or the space bar I 0I U-shaped member |58 is, as previously described, pivotally mounted on pivots |59 and I 60 and has an arm |11 through which it may be rotated to swing lever |56 and arm |65 out ofA the path of projections |54 and |66 on levers |56 and |61, respectively. When so positioned, lever |56 will not be operated upon the operation of universal bail |03 and the clutch |38 will not be tripped through such an operation.

Also secured to hammer |23 is a pawl |18 engageable with teeth |19 formed on pin drum |26. For each reciprocation of punch hammer |23, pin drum |26 will be rotated a distance equal to the space between two of the teeth |19, for when the punch hammer moves upwardly, pawl |18 engages the next succeeding tooth, and when the punch hammer |23 is moved downwardly by spring |35, pawl |18 is moved correspondingly and the pin drum |26 rotates. Pin drum |26 has a ratchet wheel |80, Figs. 1 and 6, engageable by a holding pawl |8I in its advanced position.

As is customary in keyboard perforators, mechanism is provided for rotating pin drum |26 clockwise, as viewed in Fig. 1, to bring the previously perforated areas in alignment with the punch pins I I8 for modification or cancellation.

Clutch |38 is of a type arranged to be stopped following the completion of each cycle of operation. In the present structure, for each half revolution of cam |36, the perforator is operated to perfor-ate the tape |22 with a transverse row of perforations. Spring |39 normally tends to effect engagement between toothed portions of the clutch |38, but in the rest position of cam |48 is prevented from effecting such engagement due to the provision of a cam |83 mounted on sleeve |31. Cam |83 cooperates with a post |84 fixed in casting I 2 and arranged for each revolution of cam |36 to move the splined portion of sleeve |31 along shaft 55 and thus disconnect the driven portion of the toothed clutch from the driving portion thereof. Cams |36 and |83, however, tend to rotate due to the fact that power is communicated thereto' through the friction portion of the clutch |38. Immediately upon the removal of projection |40 from the path of either stop lug |43 or |44, cam |83 is rotated sufficiently to move its high portion from engagement with post |84 whereupon spring |39 moves the driven portion of the toothed clutch to the left, as viewed in Fig. 2, to eiect its engagement with the driving portion of the clutch.

|61 is held in the path of projection |49 of lever I4I when lever I5I is rotated clockwise about its pivot |52 to remove shoulder |50 from the path of projection |49. Such a conditionA has been classified as a non-repeat operation.

Repeat operation with the mechanism disclosed may be accomplished through the depression of a key lever |85 allocated to such function.V Key lever |85 has a key top and is pivotally mounted similarly to key levers 20. Key lever |85 does not operate either permutation bars 23 and 24 or universal bail |03, but it does operate a lever |86 pivoted in a bracket mounted on the underside of casting I2, as clearly shown in Fig. 1. The opposite end of lever |86-lies beneath arm |65 which, as previously described, operates lever V |61. When key lever |85 is depressed,l lever |86 Under certain conditions of operation it is desired to eiect a continuous rotation of cam |36 and thus cause the repeated step-by-step advancement of tape |22 through the perforating mechanism. With normal operation, cam |36 a character key 20 or a depression of space bar lol, due to the fact that shoulder |14 or lever T' is rotated about its pivot to rotate arm and likewise lever |61 to move shoulder |14 out of the path of projection |49 of lever I4I. Now, if a key lever 20 or the space bar |0| is operated, universal bail |03 will be operated to rotate lever |56 and, in turn, lever I5I to move shoulder |50 of lever I5| free of projection |49 of lever I4I. Projection |40 will be moved free of either stop -lug |43 or |44 and the toothed portions of clutch |38 will be engaged and cam |36 will rotate, causing the operation of lever |3| and the reciprocation of punch hammer |23. The punches II8 will be operated in accordance with the key lever 20 or the space bar |0| which may be depressed. As long as a key lever 20 or the space bar |0I and key lever |85 are depressed, cam |36 will rotate through a number ofcycles of operation, notwithstanding the fact that cam |83 engages post |84 and temporarily dlsengages the driven portion of the toothed clutch from its driving portion. However, since cam |83 operates continuously by power communicated thereto through the friction portion of the clutch |38, the toothed portions thereof merely disengage and engage immediately to render cam |36 continuously operative to perforate tape |22 in accordance with the position of the interponents |24 under the control of permutation bars 3|.

Tape |22, following its perforation in accordancewith the operation of key levers 20, passes to the tape senser or tape transmitter I1. The structural details of the tape senser and the method of their operation are fully disclosed in copending application Serial No. 317,310, iled Feb. 5, 1940, of Erwin A. Gubisch and Albert H. Reiber. Reference is made to such copending application for a. full and complete disclosure of the tape senser I1. I v

Character counter referred to as a character counter voperated upon the depression of each character key for indicating to the operator the number of characters included in the line of printing and thus notify the operator when the line has been filled, when the carriage return key` should beA depressed, which includes in the tape a carriage return signal and returns the counter to its zero position. makes a half revolution for each depression of f' l counter embodies a supportingbracket 245 tol which issecured an arcuate scale 246 marked in Referring now to Figs. 1, 3',k and 4, the character accordance with character numbers and over which a pointer 241 moves in response to the operation of the character keys to indicate to the operator the number of characters perforated in the tape |22. Pointer 241 is secured to shaft 248 journaled in 4bracket 245 and provided with a toothed section 249 which is engageable by a stepping pawl 258 and a holding pawl 25|. Stepping pawl 250 is secured to one end of a lever 252 secured to shaft 253 journaled in bearings formed Ain bracket 245. The lower end of pawl 258 slidably engages a pin 254 secured integral with an adjustable plate 255 also supported by bracket 245. A spring 256 tends to move the upper end of pawl 258 toward the ratchet teeth of segment 249 but is prevented in the normal position of the pawl, the position shown in Fig. 3, due to the cooperation of its lower end with pin 254. The lower end of pawl 259, however, is cut away so that upon elevation of pawl 250 due to the rotation of arm 252, spring 256 will be effective to bring the upper end of pawl 258 into engagement with the ratchet teeth of segment 249. Holding pawl 25| is pivoted on a shoulder screw 251 threaded in bracket 245 and has arms 258 and 259. To arm 258 a link 268 is connected which, in its lower end, has a horizontal projection 26| engageable by lever 262 2.

pivotally mounted at 263 in a bracket 264 pivotally mounted on the upper surface of base casting l2. The lower end of link 260 is guided by a shoulder screw 265. Arm 259 of holding pawl 25E cooperates with a latch 266 pivotally mounted on bracket 245 and provided with an arm 261 engageable by a pin 268 mounted in the forward portion of segment 249. Latch 266 serves to latch holding pawl 25| free of the ratchet teeth in segment 249.y Holding pawl 25| is tensioned by means of a spring 210, and latch 266 is tensioned by means of a spring 21|.

For each operation of stepping pawl 250, pointer 241 will be -advanced a distance representative of one character where it will be held by holding pawl 25| pending subsequent operation of the stepping pawl 250 or the withdrawal of holding pawl 25|. Advancement of pointer 241 along the scale on the arcuate member 246 is under the tension of a. spring 212 which has one end secured to a fixed spring post and the other end secured to an arm of a pivoted lever 213 which has its other arm fastened to a cord 214 having its other end fastened to a grooved disc integral with pointer 241. As the pointer 241 is stepped for each operation of stepping pawl 250, the cord 274 will be wound on the grooved disc and the spring 212 will be extended so that upon the withdrawal of holding pawl 25|, the pointer 241 under the tension of spring 2112 will be returned to its zero position as shown in Fig. 3, wherein pin 268 engages arm 261 and moves latch 266 free of arm 259 of holding pawl 25|. A stop 215 limits the return of pointer 241.

Rod 253 to which arm 252 is secured extends rearwardly of bracket 245 and has its other end journaled in a plate 216 mounted on the rear surface of bracket 245. Also secured to rod 253 are two arms 211 and 218. Arm 218 carries at its free end a pin 219, Figs. 2 and 9, slidably mounted in a slot.280 formed in a bar 28| and having one end of a spring 282 secured thereto, the other end of which is fastened to a spring post extending from the back side of bar 28|. Such a construction permits the oper-ation of bar 28| even though lever 218 is held against movement because spring 282 merely extends upon the reciprocation of bar 28| under such conditions of operation.

For each transverse row of perforations .perforated in tape |22, bar 28| is reciprocated, as

will be described later, and regardless of the sig- 1 nicance of the transverse rows of perforations. On certain functional operations such as shift, unshift, line feed, and vcarriage return, it is not desired that the pointer 241 be advanced since it is intended to indicate merely the number of characters included in a line of printing. Consequently, it is necessary when the key levers for the recited functions are depressed to block the operation of the mechanism through which stepping pawl 250 is operated. According to one embodiment of the invention, this blocking is accomplished through a series of levers rendered effective upon the depression of the function key levers.

Operative from the code bars 23' and 24 in response to the depression of the function key levers such as shift, unshift, line feed, and carriage return key levers is a rod 286 which extends through an aperture formed in base casting |2.

When rod 286 is elevated and since it has its upper end adjustably aligned with an ear formed l in lever 281 having an adjusting screw, which is pivotally mounted on rod 288, itdwill, through its engagement with a projection formed in lever 289,

rotate the latter lever about its pivot rod 288 into blocking relationship with the lower end of arm 211 secured to rod 25s. A spring 29o having one end secured to a spring post projecting from lever 289 tends to rotate lever 289 counterclockwise, as viewed in Fig. 4. The other end of spring 289 is fastened to an arm 29| of a U- shaped member 292 which .cooperates with the opposite arm of lever 289 to hold the lever in its clockwise position to which it is rotated upon the elevation of rod 286. The other arm 293 of U-shaped member 292 is engagable by -a hook bar 294 secured to the forward side of bar 28|. Consequently, upon the movement of bar 28| to the left, as viewed in Fig. 1, hook bar 294 engages arm 293 of U-shaped member 292 to rotate arm 29| against the tension of spring 290 free of the end of lever 289, whereupon such lever tends to restore to the position shown in Fig. 4.

With the end of lever 289 in blocking relation with arm 211, rod 253 will not be rotated upon reciprocation of bar 28| with the result that the pointer 241 will not be advanced along the character scale. Even though bar 28| is reciprocated, it will not cause movement of arm 218, but its free movement will be permitted through an extension of spring 282. l

In order to prevent false or incorrect operation of the counter should a function key be de pressed with a staccato action, lever 289 is held in blocking relationship to arm 211 by latch 29| until bar 28| has been moved to the left suficiently to allow pawl 296 to free rear extension 295 of lever 289 and has returned to the right,

Aas viewed in Fig. 4. The following operations to the space between adjacent teeth or a distance representative of one character.

Also, in order to insure that blocking lever 289 will not be released prematurely, it is provided with an arm 295 engageable by a spring pressed pawl 296 pivotally mounted to a plate secured to rod 28|. When lever 289 is moved into blocking relationship to arm 211, its arm 295 will be positioned below the free end of pawl 296. Now, when bar 26| is moved to the left, as viewed in Fig. 4, pawl 296 is above arm 295 and even though latch 29| may be released, lever 299 will not assume its normal position due to the engagement between pawl 296 and itsv arm 295. JuSt before bar 26| reaches its extreme righthand position or the position shown in Fig. 4, pawl 296 moves clear of arm 295 so that if latch 29| has been released, lever 299 may assume the position shown in Fig. 4 to permit rotation of rod 259, the movement of stepping pawl 250, and the advancement of pointer 291 along the scale on member 296. y

The approach of the end of printing for a page printer is indicated by a signal device operative in response to a predetermined movement of the pointer 261. This device embodies a cam 291 mounted on shaft 293 to which pointer 291 is iixed. operatively associated with cam 291 is a roller carried by one arm of a bell crank lever 298 pivoted to bracket 255 and normally urged by a spring 299 to bring its roller into engagement with the surface of cam 299. The other arm of bell crank lever 293 operates contacts 396 which are normally open and which are included in the energizing circuit of a signaling lamp 30|. Normally, contacts 309 are open. However, when pointer 251 has moved to a predetermined position or a position where cam 291 rotates bell crank lever 296 clockwise about its pivot, as viewed in Fig. 2, contacts 300 will be closed and the circuit for signal lamp 30| will completed.

The illumination of lamp noties the operator of the approach of the end of printing for a` page printer and also that sh'ortly thereafter the carriage return key lever should be depressed.

As previously described, pointer 241 isheld in operated, in another position the keyboard transmitter and the tape perforator may be operated, whereas in the third position the keyboard .perforator and the tape transmitter may be operated simultaneously. With the mecl. mism set for keyboard transmission and periorator operation, the counting device need not be operated.

Consequently, the mechanism is arranged to preits advanced position by a holding pawl 25| engaging the teeth on segment 269. Withdrawal of holding pawl 25| from engagement with the indicated teeth is achieved through the clockwise rotation of lever 262, as viewed in Fig.A 1, upon the downward movement of hook bar 302 which is integral with key lever 303 identified with the carriage return function. When this key lever is depressed, hook bar 302 is moved downwardly, engaging the free end of lever 262 and, due to its relation with link 250, holding pawl 25| is rotated counterclockwise, as viewed in Fig.I 3, against the action of its spring 210. Upon the removel of the holding pawl 25| from engagement with the teeth of segment 249, spring 212 operative on lever 213 and pointer 241 through cord 214 is effective to rotate pointer 241 to its zero position where pin 268 engages arm 261 and moves its associated arm 266 to a position where its shoulder is free of extension 259 of holding pawl 25|. Holding pawl 25| may then assume a position operative with the teeth of segment 249.

The apparatus previously described may be operated independently of the perforator, the

. mitter and perforator may be operated simultaneously. Under certain conditions the tape transmitter may also be operated. To determine these selective conditions, the apparatus embodies mechanism for rendering the respective devices operative; for example, in one position of the mechanismthe keyboard transmitter may vbe jection |54 of lever |5I.

clude the operation of the counting device when the switch mechanism is in either the keyboard transmission or keyboard transmission-perforator operation position. The counting device, therefore, will be operated only when the switch mechanism is in the perforator operation and tape transmission position. However, if the switch mechanism. is in the latter described position and should it be changed to its keyboard transmission position for the transmission of anl urgent or iiash message, the counting device will not be disturbed; that is, the pointer 291 will remain in its advanced position. When the switch mechanism is restored to its former position, the counting device will be operated to continue the indication of the number of characters in the line as perforated in the tape |22.

The switch mechanism includes elements for 'rendering the respective devices operative and embodies, as shown in Figs. l. 3, and 5, a lever 39? pivotally mounted on a rod 393 extending betweenbrackets 5| and 52, Fig. 2, and capabie of being rotated vagainst the action of a spring 309 which has one end secured to a spring post integral with 1ever 301 and the other end secured to a spring post formed on lever 359 which, like lever 301, is pivotally mounted on rod 309. Spring 309 serves as a connection between levers 301 and 3|0. The lower end of lever 3|0 is bifurcated and has centrally of its projections a knife-edge 3| i. The projections and the knifeedge 3|I cooperate with a detent pin 3|2 secured to a lever 3|3 pivoted to bracket 5| and urged upwardly,as viewed in Fig. 1, by a spring 3|9 which has one end secured to a fixed spring post and the other end secured to the free end of lever 3|3. Spring 309 tends to move lever 301 clockwise with respect to lever 3 0, as viewed in Fig. 1.

Secured to lever 301 is an arcuate member 3|5 which has on its front surface the letters TP,

K, KP, which represent the several positions of namely, tape transmission-perforator operation, keyboard transmission, and keyboard transmission-perforator operation, respectively. Cooperating with the lower edge of member 3|5 is a roller 3|6 secured to one end ofpivoted lever 3|1 urged clockwise about its pivot by a spring 3|3 and also carryingat its free end an index finger 3|9 serving to indicate, in cooperation with the letters TP, K, and KP, the respective positions of the switch mechanism for the particular operation. Mlember 3|5 also has near its extreme right-hand end a notch'engageable by roller 3|6 to hold the member 301 in its extreme left-hand position against the action lof spring 309.

Integral with lever 301 is an arm 322 which has an upwardly extending projection 323 and a downwardly extending projection 324. Projection 324 is connected with lever |11 by a link 325 whereby lever |11 is moved to rotate U- shaped member |58 about its pivots |59 and |60 to move lever |56 into or out of the path of pro- Atrthe lower end of projection 324v is a horizontally-projecting arm 326, Fig. 5, which carries a roller operative on a cam surface 321 formed in a lever 328 pivoted to the upper surface of base casting I2 at 329 for rotation in a horizontal plane and provided with an arm 330 also pivoted at 329 for oscillation in a vertical plane, Fig. 81

When the lever 381 is in a position where the index`3|9 is opposite the letter -K, link 325 is moved to the right, as viewed in Fig. 1, to rotate the U-shaped member |58 to move lever |56 out of the path of projection |54 of lever |5|. Under 33| of a lever system 332, Fig. 4, which is pivoted at 333 and has arms 334 and 335 with a spring 336 tending to rotate the lever system clockwise about pivot rod 333. On arm 334 is a roller 331 engaging a cam 338 mounted on cam drum 45 which, in rotating, functions to restore stop arm 63 against the tension of its spring 66 into the path of stop lug 64, Fig. rI, to eiect disengagement between the driven portion 60| and the driving portion 62 of the positive clutch through which power is communicated to cam drum 45 and also functions through arm 33| to oscillate lever 330 about its pivot 329 when arm 328 has been moved by the roller on arm 326 to its extreme clockwise position, as viewed in Fig. 8. However, with lever 301 in the position where the index 3 |9 is opposite the letter K engraved on member 3| 5, arm 330 is held out of the path of arm 33| by spring 339, Figs. 2 and 8, and even though arm 33| is operated cyclically for each rotation of cam drum 45, no operation of arm 330 will be performed.

With the operation of the key levers 20, when the lever 301 is in the position just referred to, the permutation bars 3| will be set permutably to set correspondingly selecting lingers 34 and operate through the universal bail projection |02 and lever 84, arm 69 to free arm 61, whereupon stop arm 63 is removed from the path of stop lug 84. Connection between the driven and driving portions of the positive clutch is thereby eil'ected and the cam drum 45 rotates to operate the contact levers 40 successively in accordance with the position-of selecting ngers 34 and, in turn, contacts 4| and 42 for transmitting a signal combination indicative of the permuted setting of the selector iingers 34. As cam drum 45 continues its rotation, cam 338 operates on roller 331 to depress arm 334 and move stop arm 63 into the path of stop lug 64 and thus arrest cam drum 45 at the completion of one cycle of rotation,

when it may again be released through the depression of another key lever operating on the universal bail or bar, as previously described.

With the lever 301 in the position just described, the repeated operation of cam drum 45 may be desired, and when the space bar is depressed, hook bar 99, due to its connection with bail |00, will be moved downwardly, as viewed in Fig. 1, and will, because of its engagement with projection 98, move the opposite end of lever 32 upwardly against the action of its tension spring 94 to rotate lever 85 and move arm 1| to a position where its projection for its shoulder is out of the path of arm 61. Concurrently with the rotation of lever 92, universal bail |03 is operated and, through its connections, lever 84 is operated whereby arm 69 is rotated against the tension of spring 19 to move its shoulder 68 free of arm 61. Stop arm 63 will, under such circumstances be held by its spring 66 free of stop lug G4 to insure repeated operation of cam drum 45. For each rotation of cam drum 45, a signalcombination will be transmitted indicative of the space signal condition. Upon the release of the space bar |0I, arms 69 and 1| return to the position shown in Fig. '1, whereupon arm 61 engages shoulder 68 and stop arm 63 is held against the tension of its spring 66 in the path of stop lug 84.

Secured to arm 322 is an adjustable screw 342, Fig. 5, engageable with an arm 343 of lever 3|0 so that when lever 301 is moved to a position where index 3| 9 is' opposite the letters TP engraved on member 3|5, arm 343 will be rotated about rod 308 in a'clockwise direction, as viewed in Fig. 1. To arm 343 a link 344 extending to an arm 345 pivoted on a shoulder screw secured to base casting |2 is connected. Lever 345 has a ball shaped end, as viewed in Figs. 2 and 8, engageable in a correspondingly shaped slot in plate 89, which, as previously described, pivotally carries arms 92 and 93 through which levers and 84, respectivelyfare operated. When the switch lever 301 is in the position identiiied by the letters TP engraved on member SI5, plate 89, through link 344 and lever 345, is rotated to the position shown in Fig. 8 wherein arms 9 2 and 93 are moved free of levers 85 and 84, respectively. Also, through lever 346 lever 262 which is capable of rotation in a horizontal plane and which is movable in a vertical plane is moved into the path of hook bar 302 so that upon the operation of hook bar 302 through the depression of key lever 303, its allocated operation, as will be subsequently described, wil be performed. Through the movement of ar s 92 and 93 out of the path of levers 85 and 84, respectively, arms 69 and 1| will not be operated upon the operation of the 'universal bail and the space bar to release arm 61 and withdraw stop arm 83 from engagement with stop lug 64. even though the universal bail and the space bar may be operated, cam drum 45 will be held against rotation. With lever 301 in the position indicated by the letters TP, lever 330 remains out of the path of arm 33| of the lever system 332, but through link 325 and arm |11, U-shaped member |58 will be rotated about its pivots |59 and |60 to position lever |56 directly above projection |54 of lever |5|. Now, when a key lever or the space bar is depressed, universal bail |03 will be rotated about its pivots |04, arm |63 will be elevated as viewed in Fig. 1, lever |56 will be rotated, and lever i5| also rotated to remove shoulder |50 from the path of projection |49 of lever |4|. Spring |46 of lever |4| thus withdraws projection |40 from the path either of stop lug |43 or |44, depending upon the previous stop position of cam |45, whereupon cam |83 is rotated to permit engagement of the positive portion of clutch |38, whereupon power is communicated to cam |36.

Through the operation of a key lever, permutation bars 3| are set permutably to set the interponents |24 correspondingly. With cam |36 rotating, lever |3| will be rotated and through arm |30 operate punch hammer |23 against the tension of its spring |35 to move the correspondingly selected punches ||8 upwardly to perforate tape |22 with a transverse row o f perfora- Under such circumstances,`

mutation bars 3| identified with the particular key lever depressed. As cam |36 continues its rotation and just before it has completed its half cycle of rotation, spring |35 is effective to restore punch hammer |23 to the position/shown in Fig. 3 and in so doing operates the pin drum |26 through pawl |18 and ratchet teeth |19 to advance the tape |22 to present an unperforated area in alignment with the punch pins ||8. Lever |5| will have been restored to its normal position upon the release ofthe depressed key lever so that projection |49 engages shoulder |50 and rotation of cam |36 is arrested. However, if the key lever be held depressed, projection |49 will engage shoulder |14 of lever |13 and thus assure that stop arm |40 will be moved into the path of stop lug |43 or |44 to arrest the rotation of cam |36. Now, when the depressed key lever is released, lever |5| will be restored to the position shown in Fig. 6 and projection |49 will snap from shoulder |14 of lever |13 to shoulder |50 of lever |5|. For each succeeding key lever depressed the operation just described will be repeated. l

With the switch lever 301 in the tape transmission-perforate position, it is desired to operate the counting device I8; that is, for each operation of the perforator the pointer 241 is advanced along the scale 246 step by step. To so operate the counter, link 28| through the movement of which shaft 253 is rotated to operate feed pawl 250 and thus rotate pointer 241 an appropriate distance is provided. Reciprocation of link 28| is accomplished through a lever 346, Fig. 4, pivoted at 341 and having one end fitted in an aperture in the extreme left-hand end of link 28|, as viewed in Fig. 4, and having its other arm engageable by an arm 348 carried by arm |3| which, as previously described, is operated by cam |36. Lever 346 has its pivot 341 carried in a U-shaped member 349 pivoted on a vertical axis formed in the upper surface of casting |2 and provided withan arm 350, Fig. 2, engageable by a roller carried in one arm of an L-shaped member 35| secured to link 325 which, as previously described, is secured to projection 324 of arm 322 which is integral with lever 301 and which is set in accordance with the set positions of lever 301. With lever 301 in the position for tape transmission and perforator operation, the roller onh member 35| will engage arm 350 and rotate U-shaped member 349 clockwise against the tension of spring 353, as viewed in Fig. 2, to position the lower arm of lever 346 in the path of arm 348 carried by arm |3| which is operated by cam |36. Now, for each half revolution of cam |36, arm 348 will be depressed to rotate lever 346 and thus move link 28| to the left, whereupon rod 253 is rotated and pawl 250 engages a tooth in segment 249 to advance pointer 241 where it is held by holding pawl 25|. For each half revolution of cam |36, link 28| will be reciprocated and pointer 241 will be advanced along the scale carried by member 246.

As pointer 241 is advanced, cam 291, Fig. 2, is also advanced to rotate bell crank lever` 298 against the tension of spring 299. When cam 291 has been advanced to a predetermined point, contacts 300 will be closed and the energizing circuit for signal lamp 30| will be closed. The illumination of lamp 30| indicates to the operator the approach of the end of aline of printing and also 'that the carriage return key which perforates the tape correspondingly and which with-l draws holding pawl 25| from engagement with the teeth of segment 249 free thereof to permit the restoration of pointer 241 to its zero position should be operated. This is possible due to the fact that plate 89 is in a position where lever 262 is in the path of hook bar 302 secured to lever 303 identied with the carriage return function.

When perforated tape is being advanced from the perforator I6 due to its operation, the tape transmitter |1 may or may not be operating simultaneously with the operation of the perforator |6 as fully described in the cited copending application of Erwin A. Gubisch and Albert H. Reiber.

As shown in Fig. 1, an arm 369 of a lever 358 secured to a rod 359 cooperates with the insulated end of contact 356 to move such contact out of engagement with contact 355 and thus break the 'circuit of electromagnet 2| 8 to arrest the operation of tape transmitter |1. Rod 359 is suitably journaled in brackets secured to base casting |2 and has secured to its forward end a depending arm 360 bifurcated at its lower end to cooperate with a pin 36| secured to an arm of a bell crank lever 362v rotatably mounted on a shoulder screw 363 and held in either of two positions Aby an olf-center spring 364. By moving bell crank lever 362 to either of its two extreme positions wherein it will be held by spring 364, depending armA 360 will be rotated either counterclockwise or clockwise, as viewed in Fig. 1, to cause corresponding rotation of rod 359 and, in turn, lever 358, whereupon its arm 351 either moves spring 356 free of spring 355 or allows these springs to engage and thus complete a circuit to cause resumption in the operation of tape transmitter |1.

With the provision of lev'er 362, operation of tape transmitter |1 may be selectively controlled by the operator, for with the lever 362 in its extreme lowermost position, as viewed in Fig. 1, contacts 355and 356 are open and operation of transmitter |1 is precluded. With operation of tape transmitter |1 arrested and with switch member 301 in the keyboard perforate position, the perforator 16 may be operated for perforating tape |22 prior to the transmission of signals indicative of the transverse rows of perforations in tape 22. Such an arrangement enables an operator prior to transmission from perforated tape |22 to determine the accuracy of the message to be transmitted by examining the printed copy of the message as recorded on the receiving printer |3- in response to the operation of the keyboard transmitter including the selectable lingers 34, cam drum 45, and contacts 4| and 42. When the accuracy of the message to be transmitted has been determined, lever 362 may be thrown to its uppermost position to close contacts 355 and 356 whereupon tape transmitter |1 will operate in a manner well understood for transmitting signal combinations indicative of the perforations in tape` |22.

' Also, cooperating with the insulated end of spring 356 is an arm 365 of a lever system 366 which has an arm 361 extending toward the transmitter |1, as viewed in Fig. 1, and having a lsection bent transversely of tape |22 located between the perforator |6 and the tape transmitter |1. When the section of tape |22 intermediate perforator I6 and tape transmitter I1 becomes taut, arm 361 of lever system 366 will be raised and arm 365 will be rotated in a clockwise direction, as viewed in Fig. 1, to move spring 356 free of spring 355 and thus arrest operation of the transmitter or senser I1. As the tape |22 intermediate perforator I6 and tape transmitter I1 loses its tautness or forms a loop therebetween, arm 261 will drop sufficiently to rotate lever system 366 and move arm 365 free of contact 356 whereupon contacts 355 and 356 are again in electrical connection to complete a circuit, when transmission through the operation of the tape transmitter 11 will be resumed. Of course, the effectiveness of lever system 366 -on spring 356 is contingent upon lever 362 being suiiiciently to remove contact spring 356- for engagement with contact spring 355 and thus open the energizing circuit of the control electromagnet of transmitter I1 to arrest or prevent operation of such transmitter when switch member 301 is in either of the two indicated positions.

It will be apparent from the previous description that the apparatus embodied in the present invention is capable of a variety of selective operations; that is, it may be used for direct keyboard transmission, keyboard transmission and perforator operation, or for tape transmission and periorator operation depending 'upon' ythe position of switch member 301. When the switch member 301 is in its tape transmission-periorator operation position, counting device I6 is eective for indicating to the operator, as-the composition of the message proceeds, the exact location of each character in the line oi printing and informs the operator of the approach of the end of the line of printing when the carriage return key should be depressed for perforating in the tape a carriage return signal and for restoring the counting device I6 to its zero or beginning of line position. When the switch member 301 is in its tape transmission-perforator operation position, tape transmitter I1 operates in accordance with the transverse rows of periorations appearing in tape |22. If, during such operation the transmission of a ash or urgent message is desired, switch member 301 may be moved to its direct keyboard transmission position which will establish a condition to arrest tape transmitter I1 -and rotate plate 366 to bring levers 62 and 63 into operative relation with levers 65 and 64, respectively, to place the transmitting drum 45 under the control oi the key levers, and do render the counting device I6 inoperative either in response to the operation oi' the character key levers or the operation of the carriage return key lever. Under such conditions the indicator 241 of the indicating device I6 will remain in its previously advanced position pending the transmission of the flash or urgent message through the operation of the key levers and the rotation of cam drum 45. or urgent message has been completed, switch member 301 may be restored to its tapetransmission keyboard operation position wherein the tape transmitter I1 will resume its operation and indicating device I6 will be 4placed under the operation from the point reached in the message when the switch member 301 was moved from its tape transmission perforator operation position to its direct keyboard transmission position for the transmission of the flash or urgent message. By retaining the indicating pointer 241 of the indicating device I6 in its advanced position during transmisson of the ash or urgent message, the operator will know the exact position of the line of printing, as represented in tape |22, when perforator operation is resumed.

The switch member 301 has a third position for the control of the apparatus; namely, thekeyboard-perforate position. When in this position, the keyboard transmitter I5 and the tape perforator I6 will be operated. The tape transmitter 4 may also be operated due to the fact that conlever 330 is a bar 313, Figs. 1, 2, and 4, which has f one end supported by a shoulder screw 314, Fig.

When transmission of the ash control of the perforator I6 and will continue its 75 tacts 355 and 356 may be closed, which controls operation of tape transmitter I1. This position or the 'switch member 301 is represented by KP on semi-circular member 3I5.

Withthe switch member 301 in the position indicated arm 322 will be rotated to its extreme left-hand position, as viewed in Fig. 1, wherein arm 366 causes lever 356 to be rotated to a position where contacts 355 and 356 are separated. The control circuit for the .tape transmitter is thereupon opened. Also, with switch member 301 in its extreme left-hand position, link 325 is moved to the right, as viewed in Fig. 1,

whereupon through link |11 U-shaped member |56 is rotated about its pivots |66 and |60 to a position where lever |56 lies out of the path of arm |63 of the universal bail |03 so that the depression of key levers 20 and the space bar |6I will not operate lever |56 and thus control the operation of clutch |36 through which power is communicated to cam |36 for operating the perforator I6. Also, with link 325 in its extreme right-hand position, arm 326 will have engaged lever 326 to rotate arm 330 in the path of 33| which, as previously described, is operated by cam 336 mounted on cam drum 45 which is driven through the toothed members 62 and 63. In addition, the movement of link 325 to its extreme right-hand position permits spring 353 to rotate lever 346 out of the path of arm 346, which is operated by lever I3| of the perforator I6 so that even though lever |3| is operated by its cam |36, lever 346 will not be operated when the link 325 is in its extreme right-hand position, as viewed in Fig. l. Consequently, bar 26| through which the counting mechanism is operated will not be reciprocated i'or each cyclic operation of the perforator.

operatively associated with and operated by 4, fastened to a bracket 315 mounted on the upper facev of base I2. As shown in Fig. 4, bar 313 is slotted at the location of screw 314 which permits limited reciprocation. The other end of bar 313 is fastened to one end of a bell crank lever 316 rotatably supported by a shoulder screw 311, Fig. 1, supported by a bracket 316, Fig. 2, secured to the upper face of base I2 and provided with an adjustable screw 360 to limit the leftward ltravel of bar 313 and thus control the extent of counterclockwise rotation of bell crank lever 316.

Bracket 316 also carries a spring post to receive one end of a spring 36| which has its other end secured to an arm of lever 316. Thus, it is seen that bar 313 is moved to the right, as viewed in Fig. 4, against the tension of spring 36|.

As illustrated in' Figs. 1 and 4, the free arm of bell crank lever 316 is positioned above pivoted lever |5| so that upon clockwise rotation of bell crank 316, lever will be rotated against the tension of its spring |15 to render clutch |38 effective, whereupon cam |36 rotates to operate punch hammer |23 througharm |3| and its associated apparatus. It is thus apparent that for each operation of cam drum 45 cam 338 is effective to operate arm 330 through arm 33|, whereupon bar 313 is moved to the right, as viewed in Fig. 4, against the tension of its spring 38 |.v Bell crank lever 316 is rotated clockwise, as viewed in Fig. l, and lever |5| is rotated to release clutch |38, as previously described in connection with the detailed description of the perforator and its operation. When cam 338 has rotated to a position where its apex clears the cam follower roller 331, spring 38| will restore bar 313 and arm 330 to their normal or unactuated position.

When switch arm 301 is in the position indicated by the letters KP, the keyboard and the cam drum 45 are operated to transmit to the connected line, provided the line circuit has been closed, and to the receiving printer, signals in accordance with the operation of the key levers 20 and to perforate tape |22 correspondingly. 'Inasmuch as receiving printer |3 responds to the operation of the key levers 20 and since such a printer prints the characters or the message in page form, the character counter |8 is not required in such operation because the receiving printer I3 serves to indicate to the operator the end of a line of printing, whereupon the operator depresses the carriage return key which transmits a signal to restore the carriage to its beginning of line position and to perforate in tape |22 through the corresponding setting of the interponents |28 a signal combination indicative of the carriage return function. For each operation of cam drum 45 in response to the depression of each of the key levers 20 and the space bar |0l, c am 338 operates arm 33| to in turn operate arm 330. Through the operation of arm 330 bar 313 is moved to the right to rotate bell crank 316 in a clockwise direction to depress lever |5| through which clutch |38 is released.

It is apparent from the previous description that with the switch member 301 in its eXtreme lefthand position, the cam drum 45 will be operated in the same manner as previously described, when the'switch member 301 was in its keyboard position; that is, the position indicated by the letter K.- Ho'wever, with the switch member 301 in its extreme left-hand position, bar 313 will be operated through arms 33| and 330 for each cycle of rotation of cam drum 45 so that the perforator, instead of being controlled from the key levers 20 and the space bar I0 is controlled from and is operated in timed relation with the operation of cam ldrum 45.

If after the tape |22 has been prepared with the switch member 301 in its extreme left-hand position it is desired to transmit the signals represented by the transverse rows of perforations, the perforated tape |22 is inserted in transmitter |1 and contacts 355 and 356 are closed through the appropriate operation of lever 362. Under such circumstances, the transverse rows of perforations will be sensed and signals will be transmitted through the corresponding operation of contact springs, as described in detail in the cited copending application.

While the invention has been described as applied to a particular form of apparatus, it is .apparent that it is applicable to other forms of apparatus without departing from the spirit and scope of the present invention.

What is claimed is:

1. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive i'or each operation of the perforator, key levers for controlling. said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of operations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by and for each operation of said cyclically operated member, and means operated by said bar for operating said pawl to rotate said ratchet and said pointer.

2. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with saidl scale to indicate the number of operations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by and for each operation of said cyclically operated member, means operated by said bar for operating said pawl to rotate said ratchet and said pointer, and means responsive to the operation of certain of said key levers for restoring said ratchet and pointer to their zero or normal position.

3. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of ope-rations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by and for each operation of said cyclically operated member, means operated by said bar for operating said pawl to rotate said ratchet and perforator, key levers for controlling said transmitter and perforator, means for rendering said transmitter and perforator operative selectively from said key levers, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of operations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by and for each operation of the cyclically operated member, means operated by said bar for op erating said pawl to rotate said ratchet and said pointer, and means actuated by said first recited means for precluding the operation of said pawl by said bar from said cyclically operated member.

5. In combination with a telegraph transmitter and tape perforator including a. cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmitter and perforator, means for render ing said transmitter and perforator operative selectively from said key levers, a tabulation indicator including a scale, an index pointer coof said pawl by said bar from said cyclically operated member, and means responsive to the operation of certain of said key .levers for restoring said ratchet and pointer to normal or zero position.

6. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmittersand perforator, means for rendering said transmitter and perforator operative selectively from said key levers, a tabulation indicator including a scale, an index pointer cooperating with said scale. to indicate the number of operations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by and due to each operation of the cyclically operated member, means operated by said bar for operating said pawl to rotate said ratchet and said pointer, and means actuated by said rst recited means for precluding the operation of said pawl by said bar from said cyclically operated member and the restoration of said ratchet and pointer to normal when certain of said key levers are depressed.

7. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, character and function key levers for controlling said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of operations of the character keys, means for operating said pointer step by step, means reciprocated by and due to each operation of said cyclically operated member up- -on the depression of each of 'said key levers, and

means operated by -said reciprocated means for operating the pointer operating means `for the depression of each of said character key levers.

8. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number o! operations, a pawl and ratchet for operating said pointer step by step, a bar reciprocated by and due to each operation of said cyclically operated member, and means eiective upon the reciprocation of said member for allowing said pawl to engage said ratchet and for moving said pawl after such engagement to rotate said ratchet whereby said pointer is moved along said scale.

9. In combination with a telegraph signal transmitter and a tape perforator including key levers for controlling said transmitter and said perforator, a cam operated for each key lever depressed when said periorator is effective for perforating a tape in accordance with telegraph signals, a tabulation indicator for indicating the number of character key levers depressed including a scale, an index pointer cooperating with said scale to indicate the number of operations, means for operating said Vpointer step by step, means operated by said cam for operating said pointer operating means, and means for precluding the operation oi said cam operating means by said cam during the operation of said signal transmitter.

10. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, key levers for controlling said transmitter and pertorator, means' for rendering said transmitter and perforator operative selectively fom said key levers, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of operations, a ratchet and pawl mechanism for operating said pointer step by step, a bar reciprocated by said cyclically operated member, means intermediate said bar and said cyclically operated member through which said bar is reciprocated,

. means operated by said bar for operating said pawl to rotate said ratchet and said pointer, and means for rotating said intermediate means whereby said bar will not be reciprocated by said cyclically operated member.

11. In combination with a telegraph transmitter and tape perforator including a cyclically operated member responsive for each operation of the perforator, character and function key 1evers for controlling said transmitter and said perforator, a tabulation indicator including a scale, an index pointer cooperating with said scale to indicate the number of operations of the character keys, means for operating said pointer step by step, means reciprocated-by and due to each operation of said cyclically operated member upon vthe depression of each of said key levers, means operated by said reciprocated means for operating the pointer operating means for the depression of each of said character key levers, and means for precluding the operation of said pointer operating means lupon the depression oi' a function key lever notwithstanding the operation of said reciprocated means.

ERWIN A. GUBISCH. 

